Examine source code of Gitlab Markdown Focus

{
  "manifest_version": 2,
  "name": "Gitlab Markdown Focus",
  "version": "1.1",
  "description": "Hide all other parts in Gitlab except markdown viewer",
  "icons": {
    "48": "icons/48_enabled.png",
    "96": "icons/96_enabled.png"
  },
  "background": {
    "scripts": [
      "main.js"
    ]
  },
  "page_action": {
    "default_icon": "icons/96_disabled.png",
    "browser_style": true
  },
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{db5f117f-56df-4250-a7e0-8b853ca22d72}"
    }
  }
}